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Highlights

  • InfiniiMode
  • Compatible with all InfiniiMax III/III+ accessories and new QuickTip head
  • Probe amp loaded with “measured” S-parameter for more accurate AC correction
  • Direct connect to Infiniium 90000X/Q and V-Series oscilloscopes (requires software version 5.50 or higher)

The bandwidth-enhanced N7003A InfiniiMax III+ 20 GHz probe amplifier is used for general-purpose, high-speed differential bus probing.

Keysight’s InfiniiMax III+ probes offer InfiniiMode technology, which greatly expands the measurement capabilities and usability of the probe, making it capable of measuring all the components of a differential signal. With a single connection, engineers can set the InfiniiMax III+ to measure the differential signal, the single-ended A or B signals, and the common-mode component of a differential signal.

As with InfiniiMax III technology, each individual InfiniiMax III+ probe amp contains its unique S-parameter, and this frequency response data is used with the S-parameters of the various probe heads to further flatten the probe’s magnitude and phase response for accuracy. The ability to correct a specific probe amplifier’s response results in a more accurate probe correction, which yields a more accurate measurement.

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Featured Resources

Application Notes 2024.10.20

Demystifying RCRC and RC Probes

Demystifying RCRC and RC Probes

An ideal oscilloscope probe would simply provide an exact replica of the signal being probed. However, in the real world, the probe becomes a part of the circuit under test because the probe or probing accessories attached to the device under test (DUT) introduce probe loading to the circuit. Depending on the probe and the circuit, the probe loading may cause unwanted side effects such as overshooting, ringing, and DC offset problems in the time domain. Learn more about the difference between RC and RCRC probe architecture, what this means for probe loading, and how to get the most accurate measurements.

2024.10.20

Application Notes 2018.06.20

Bandwidth Boosting Techniques for the Infiniimax Probe Amp and Probe Head

Bandwidth Boosting Techniques for the Infiniimax Probe Amp and Probe Head

Keysight InfiniiMax differential probes are DSP corrected to have a flat magnitude and phase response to provide the highest possible accuracy. The bandwidth chosen to correct to is typically around 3dB non-corrected bandwidth. Usually, extending the bandwidth much beyond that point will increase the noise floor, and if pushed even further, can cause unrealistic noise artifacts. This application note presents the techniques used to extend the bandwidth performance of the InfiniiMax 1169A/B and the N5381A/B solder-in head using the PrecisionProbe application on Infiniium realtime oscilloscope.

2018.06.20

Application Notes 2023.03.12

Probe Soldering Guidelines for Keysight InfiniiMax Probes

Probe Soldering Guidelines for Keysight InfiniiMax Probes

There are various ways to connect test instrumentation probes to devices under test (DUTs). One such method is soldering, which provides a reliable connection and minimizes parasitic probing effects by keeping wire lengths and connections as short as possible. Many of Keysight’s high performance oscilloscope probes utilize soldered connections. As probes and devices continue to shrink, using the correct tools and soldering skills becomes even more critical in order to avoid damage and connectivity issues. This guide provides helpful tips, recommended tools, and techniques specific to Keysight probes to help test engineers make the most out of their soldered-in probes and connections.

2023.03.12

Quick Start Guides 2019.01.21

Quick Reference Card for Keysight N7000/1/2/3A InfiniiMax III+ Probes

Quick Reference Card for Keysight N7000/1/2/3A InfiniiMax III+ Probes

This card quickly describes how to use the InfiniiMax III+ probes and compatible browsers and probe heads.

2019.01.21

User Manuals 2015.01.31

Handling Guide for Keysight N7000/1/2/3A InfiniiMax III+ Probes

Handling Guide for Keysight N7000/1/2/3A InfiniiMax III+ Probes

This guide assists you in properly handling your InfiniiMax III+ N7000/1/2/3A probes to prevent damage and maintain high performance.

2015.01.31

Data Sheets 2024.06.25

Infiniium Oscilloscope Probes and Accessories

Infiniium Oscilloscope Probes and Accessories

To get the most out of your Keysight Infiniium oscilloscope, you need the right probes and accessories for your particular applications. Whether you need the high bandwidth and low loading of an active probe, an easy way to connect to surface mount ICs, or a passive probe to measure high voltages, there’s a wide selection of high-quality probes and accessories for your Infiniium oscilloscope. The Infiniium probes and accessories data sheet provides you the overview of all probes and accessories recommended for Infiniium oscilloscopes.

2024.06.25

Data Sheets 2024.12.02

InfiniiMax RCRC Probing System

InfiniiMax RCRC Probing System

The new InfiniiMax 4 series probing system is a groundbreaking solution designed to deliver unparalleled signal fidelity and accuracy with bandwidth capabilities reaching up to 52 GHz, all while maintaining exceptionally low loading. With the InfiniiMax III/III+ probe amplifiers, this advanced InfiniiMax RCRC probe system ensures swift and reliable measurements ranging from 8 GHz to 52 GHz, setting a new standard in probing technology.

2024.12.02

User Manuals 2023.02.09

N2830/1/2A and N7000/1/2/3A InfiniiMax III+ Probes User Guide

N2830/1/2A and N7000/1/2/3A InfiniiMax III+ Probes User Guide

This document contains information about the InfiniiMax III and III+ Probing System.

2023.02.09

Oscilloscope Probes Selection Guide

Oscilloscope Probes Selection Guide

Keysight offers a broad range of voltage, current, and optical probing solutions for InfiniiVision and Infiniium Series oscilloscopes.
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